void Stop() override;

	void MainLoop() override;

	void MakeDirty(int left, int top, int width, int height) override;

	bool AfterBlitterChange() override;

	bool ChangeResolution(int w, int h) override;

	bool ToggleFullscreen(bool fullscreen) override;

	void EditBoxLostFocus() override;

	/* --- The following methods should be private, but can't be due to Obj-C limitations. --- */

	void MainLoopReal();

	virtual void AllocateBackingStore(bool force = false) = 0;

protected:

	Rect dirty_rect;    ///< Region of the screen that needs redrawing.

	bool buffer_locked; ///< Video buffer was locked by the main thread.

	Dimension GetScreenSize() const override;

	float GetDPIScale() override;